X-RAY GENERATOR AND X-RAY IMAGING APPARATUS

摘要

Provided is an X-ray generator (10) which causes electrons having passed through an electron path (4), formed by an electron path formation member (3) surrounding the periphery of the electron path (4), to be emitted against a target to generate an X-ray, in which: an X-ray generated when the sub X-ray generating portion (5) provided in the electron path (4) is irradiated with the electrons backscatterred off the target is capable of being taken out; a material which constitutes the target and a material which constitutes at least the sub X-ray generating portion (5) of the electron path formation member (3) are the same material of which atomic number is 40 or greater. X-ray generation efficiency can be improved by effectively using the electrons backscatterred off the transmission target.

主权项

1. A transmission type X-ray generator comprising an electron path formed by an electron path formation member surrounding a periphery of the electron path, through which electrons having passed are made to irradiate the target so as to generate an X-ray, wherein:
a sub X-ray generating portion which generates an X-ray when being irradiated with electrons backscatterred off the target is provided in the electron path; the sub X-ray generating portion and the target are disposed in a manner that both an X-ray generated from the target which is directly irradiated with the electrons, and an X-ray generated from the sub x-ray generating portion which is irradiated with the electrons backscatterred off the target are made to be emitted outside; and a material which constitutes the target and a material which constitutes at least the sub X-ray generating portion of the electron path formation member are the same material of which atomic number is 40 or greater.